Poppy, played by Rachel Bright, returns to Albert Square to help with the preparations for Janine Butcher's wedding.
Online fans have been speculating about a return for Poppy for some time after Bright hinted at the news on her Twitter page.
An EastEnders spokesperson told Digital Spy today (May 18): "As a returning character, Poppy - played by Rachel Bright - will be back in Walford next month.
"Poppy is drafted in by Tanya to help prepare Janine for her big day. But now working as a successful nail artist, who knows how long she'll stay?"
Supporting character Poppy appeared in a number of episodes last year as the best friend of Jodie Gold (Kylie Babbington).
She was last seen on screen in November.